Yesterday all my indicator lights started blinking, my gauges were working and than not and than my blazer stalled. I was unable to get the key to turn completely off or remove the key or restart it for approx. 5 to 10 minutes. I could turn the key to the start position but the only thing that happened was a buzzing sound coming from what sounded like under the glove box area. Prior to the happening I did notice for the last 2 weeks my radio was no longer keeping the proper time. My clock would be a 12 every once in a while and a couple time I lost all the power to the instrument cluster but after shutting it off for a while they would work again when I restarted it. Checked my grounds and they seem fine so was wondering if next step is to replace the ignition switch or should I be checking something else?

 

Sounds like the ignition switch. But did you check the battery terminals and wires? This post should help....
https://blazerforum.com/forum/tech-articles-diy-29/ignition-switch-replacement-29167/

 

Thanks for the link. Made the change out very easy.